阅读说明：本技术 一种用于纤维素原料水解糖化的压滤式稀酸水解反应器 (Filter-pressing type dilute acid hydrolysis reactor for hydrolysis saccharification of cellulose raw material ) 是由 孙世中 宋洪川 樊芳玲 郭嘉航 黄晶心 徐武美 官会林 于 2021-01-04 设计创作，主要内容包括：本发明公开了一种用于纤维素原料水解糖化的压滤式稀酸水解反应器,由稀酸罐、原料罐和产物罐组成,在原料罐中旋转轮沿着轴上的螺纹旋转时推动原料罐盖沿轴上下移动,产生对水解物的压滤作用,原料罐下部设置有蒸汽排气口和蒸汽换热盘,可以通过蒸汽对原料罐进行加气和加热处理,稀酸罐、原料罐和产物罐之间通过多孔的罐壁相隔,调节原料罐多孔罐壁上孔眼孔径大小,可以快速进行水解物的固液分离。本发明能够有效控制纤维素原料的水解时间,减少发酵抑制物的产生,还能够改变稀酸种类和浓度、原料罐温度、蒸汽进入量、停留时间,从而对纤维素原料采用不同的水解条件进行二级或者多级水解糖化或工艺条件优化,探索最佳工艺条件。(The invention discloses a pressure filtration type dilute acid hydrolysis reactor for hydrolysis and saccharification of cellulose raw materials, which consists of a dilute acid tank, a raw material tank and a product tank, wherein a rotary wheel in the raw material tank pushes a raw material tank cover to move up and down along a shaft when rotating along a thread on the shaft, so as to generate the pressure filtration effect on hydrolysate, a steam exhaust port and a steam heat exchange disc are arranged at the lower part of the raw material tank, the raw material tank can be aerated and heated through steam, the dilute acid tank, the raw material tank and the product tank are separated by porous tank walls, the pore diameter size of pores on the porous tank walls of the raw material tank is adjusted, and the solid-liquid separation of the hydrolysate can be rapidly carried out. The method can effectively control the hydrolysis time of the cellulose raw material, reduce the generation of fermentation inhibitors, and change the type and concentration of dilute acid, the temperature of the raw material tank, the steam inlet amount and the retention time, thereby performing two-stage or multi-stage hydrolysis saccharification or process condition optimization on the cellulose raw material by adopting different hydrolysis conditions, and exploring the optimal process condition.)

1. A filter-pressing formula diluted acid hydrolysis reactor for cellulose raw materials hydrolysis saccharification, including diluted acid jar (26), head tank (27), product jar (11), support (18), its characterized in that: the support (18) is connected to the bottom of the raw material tank (27), the bottom plate (37) of the raw material tank (27) can be opened and closed, the dilute acid tank (26) and the raw material tank (27) are separated by a porous dilute acid tank wall (25), the raw material tank (27) and the product tank (11) are also separated by a porous raw material tank wall (12), a shaft (10) with threads outside is arranged in the middle of the raw material tank (27), the raw material tank cover (1) is connected to the shaft (10) through a rotating wheel (3), a steam pipe (16) enters from the lower part of the raw material tank (27) and is communicated with a steam heat exchange disc (13) and a steam exhaust port (24) which are positioned at the lower part of the raw material tank (27).

2. The dilute acid hydrolysis reactor according to claim 1, wherein the dilute acid tank wall (25) is formed by two tank wall plates with a plurality of holes having the same position, shape, size and number, and comprises a tank wall plate A (33) and a tank wall plate B (34), the tank wall plate A (33) is fixed, and the tank wall plate B (34) can move longitudinally, so that the hole diameter of the hole (35) formed by the two tank wall plates changes.

3. The dilute acid filter-press reactor according to claim 1, wherein the feedstock tank wall (12) is formed by three tank walls having a plurality of holes of the same position, shape, size and number, and the tank walls include a tank wall a (33), a tank wall B (34) and a tank wall C (32), wherein the tank wall a (33) is fixed, the tank wall B (34) is movable in the longitudinal direction, and the tank wall C (32) is movable in the transverse direction, so that the hole size of the hole (35) formed by the three tank walls is changed.

4. The filter-pressing type dilute acid hydrolysis reactor for hydrolysis and saccharification of cellulose raw materials according to claim 1, wherein the rotating wheel (3) comprises a rotating wheel disc (5), a rotating wheel upright post (6), a rotating wheel beam (7), a rotating wheel ball (2) and a rotating wheel sleeve (4), the rotating wheel disc (5) is connected with the rotating wheel beam (7) through the rotating wheel upright post (6), and the two ends of the rotating wheel beam (7) are embedded with the rotating wheel ball (2).

5. A dilute acid filter-press reactor for the hydrolytic saccharification of cellulosic feedstocks according to claims 1 and 3, characterized by the fact that the feedstock pot cover (1) is hollow in the middle and has a track for the revolving wheel balls (2) to run, along which the embedded revolving wheel balls (2) can roll circumferentially when the revolving wheel (3) rotates along the shaft (10), thus moving the feedstock pot cover (1) up and down.

6. The dilute acid filter-press reactor according to claims 1 and 3, wherein the steam pipe (16) is provided with a steam pipe switch (17), the steam exhaust port (24) is provided with a steam exhaust port adjusting knob (23), and the steam heat exchange plate (13) is provided with a condensed water discharge pipe (19).

7. A pressure filtration dilute acid hydrolysis reactor for the hydrolytic saccharification of cellulosic feedstocks according to claim 1, characterized in that the dilute acid inlet pipe (30) enters the dilute acid tank (26) from above, the bottom of the dilute acid tank (26) has a drain (21) with a switch (22), and the bottom of the product tank (11) also has a drain (15) with a switch (14).

Technical Field

The invention relates to a dilute acid hydrolysis reactor for hydrolysis and saccharification of a cellulose raw material, in particular to a filter-press type dilute acid hydrolysis reactor.

Background

The cellulose raw material has high crystallinity, besides cellulose, various components of hemicellulose and lignin, complex structural hierarchy and various types, and the cellulose raw material is difficult to hydrolyze and saccharify. The dilute acid hydrolysis is a green process technology for saccharification of cellulose, and compared with concentrated acid hydrolysis and enzyme hydrolysis, the hydrolysis time is short, the efficiency is high, the hydrolysis process is environment-friendly, and a plurality of advantages are achieved. In order to reduce the generation of fermentation inhibitors and further improve the dilute acid hydrolysis saccharification rate of cellulose raw materials, people continuously explore new methods, and sequentially generate hydrolysis reactors such as a percolation type hydrolysis reactor, a counter-flow type hydrolysis reactor, a cross-flow type hydrolysis reactor and the like, but the methods have the defects of incomplete technology, complex operation, higher cost and the like.

Disclosure of Invention

The invention provides a filter-press type dilute acid hydrolysis reactor, which integrates three tanks, wherein the tank bodies are separated by a porous tank wall with adjustable pore diameter, and the raw material tank is provided with a raw material tank cover capable of moving up and down along a shaft and a steam heating device consisting of a steam exhaust port and a steam heat exchange disc.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a pressure filtration formula diluted acid hydrolysis reactor for cellulose raw materials saccharification of hydrolysising, by the dilute acid jar, the three jar bodies of head tank and product jar are constituteed, in the dilute acid jar, the diluted acid feed liquor pipe gets into from the upper portion of dilute acid jar, the leakage fluid dram is located the dilute acid bottom of the jar, porous dilute acid jar tank wall is separated by with the head tank, there is an outside threaded axle in the middle of the head tank, the head tank is put up through swiveling wheel and hub connection, the swiveling wheel reciprocates along the axle around epaxial screw thread rotation drive head tank cover through the axle sleeve, the steam pipe gets into from the lower part of head tank, intercommunication steam heat exchange dish and steam vent, the head tank bottom is the bottom plate that can open and shut, porous head tank wall is separated by the product jar, there is a leakage fluid dram bottom the product jar.

The pressure filtration type dilute acid hydrolysis reactor for hydrolyzing and saccharifying the cellulose raw material is characterized in that the tank wall of the dilute acid tank consists of two tank wall plates with holes, the positions, the shapes, the sizes and the number of the holes on the tank wall plates are the same, one of the tank wall plates is fixed, and the other tank wall plate can move longitudinally within a certain range, so that the hole diameter of the hole is adjusted. When the aperture becomes larger, the dilute acid can flow from the dilute acid tank to the raw material tank until the aperture becomes smaller and is closed.

The pressure filtration type diluted acid hydrolysis reactor for hydrolyzing and saccharifying the cellulose raw material is characterized in that the tank wall of the raw material tank consists of three tank wall plates with holes, the positions, the shapes, the sizes and the number of the holes on the tank wall plates are the same, one of the tank wall plates is fixed, and the other two tank wall plates can respectively move transversely or longitudinally within a certain range, so that the hole diameters of the holes are adjusted. When the aperture is smaller than the particle size of the cellulose raw material, the hydrolysate can be subjected to solid-liquid separation when passing through the wall of the raw material tank, the solid part is left in the raw material tank, the liquid part passes through the wall of the raw material tank and flows to the product tank, when the aperture is zero, the holes on the porous tank wall of the raw material tank are closed, and the raw material tank can be used for hydrolyzing and saccharifying the cellulose raw material.

Foretell a filter-pressing formula diluted acid hydrolysis reactor for cellulose raw materials saccharification of hydrolysising, the swiveling wheel constitute by rim plate, stand, crossbeam, ball and axle sleeve, the rim plate passes through the stand and the crossbeam is connected, the ball is all inlayed at the both ends of crossbeam, the ball is inlayed in the inside of raw materials cover again, rolls along the inside circular orbit of raw materials cover, has the supporting role to the raw materials cover simultaneously.

The pressure filtration type dilute acid hydrolysis reactor for hydrolyzing and saccharifying the cellulose raw material is characterized in that the steam exhaust port is provided with the adjusting knob, the size of the steam exhaust port can be adjusted, the air inflow of steam is controlled, and the steam heat exchange disc is provided with the condensed water discharge pipe.

The invention has the advantages that the wall of the dilute acid tank and the wall of the raw material tank have two states of opening and closing by adjusting the aperture size, thereby being capable of controlling the time of dilute acid entering the raw material tank or the time of hydrolysate entering the product tank, particularly controlling the hydrolysis retention time of the raw material tank, avoiding the product from further decomposing to generate harmful substances such as fermentation inhibitor, and the like, the internal pressure of the raw material tank can be improved by closing the eyelet of the porous tank wall of the raw material tank and adjusting the height of the raw material tank cover, thereby generating the filter pressing effect to promote the hydrolysate in the raw material tank to complete solid-liquid separation, liquid product enters the product tank, solid part is remained in the raw material tank, the processing conditions of the raw material tank can be changed by controlling the internal pressure of the raw material tank, the type and concentration of the dilute acid, the steam air inflow and the steam temperature, the hydrolysis retention time, thereby being capable of strictly carrying out stage-by, the technological conditions of hydrolysis and saccharification are optimized, and the hydrolysis and saccharification rate is effectively improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the present invention.

FIG. 2 is a top view of the reactor.

FIG. 3 is a schematic view of the adjustment of the pore size of the porous tank wall.

FIG. 4 is a schematic view of the movement of the wall panels of the perforated tank wall.

Fig. 5 is a schematic view of the steam vent opening.

FIG. 6 is a schematic view of the steam vent closing.

FIG. 7 is a schematic view of the relative positions of the steam heat exchanging plate and the steam exhaust port.

In the figure, 1, a raw material tank cover, 2, a rotating wheel ball, 3, a rotating wheel, 4, a rotating wheel shaft sleeve, 5, a rotating wheel disc, 6, a rotating wheel upright post, 7, a rotating wheel cross beam, 8, a raw material tank wall plate B moving knob, 9, a tank wall plate C moving knob, 10, a shaft, 11, a product tank, 12, a raw material tank porous tank wall, 13, a steam heat exchange disc, 14, a product tank drain pipe switch, 15, a product tank drain pipe, 16, a steam pipe, 17, a steam pipe switch, 18, a bracket, 19, a condensate drain pipe, 20, a condensate drain pipe switch, 21, a dilute acid tank drain pipe, 22, a dilute acid tank drain pipe switch, 23, a steam exhaust port adjusting knob, 24, a steam exhaust port, 25, a dilute acid tank porous tank wall, 26, a dilute acid tank, 27, a raw material tank, 28, a dilute acid tank wall plate B moving knob, 29, a dilute acid tank inlet pipe switch, 30, a, 31. tank wall travel bar 32, tank wall C, 33, tank wall a, 34, tank wall B, 35, perforations, 36, steam vent travel bar 37, raw tank floor, 38, imperforate tank wall.

Detailed Description

[ example 1 ]

A pressure filtration type dilute acid hydrolysis reactor for hydrolysis and saccharification of cellulose raw materials comprises a dilute acid tank 26, a raw material tank 27 and a product tank 11, wherein the tank bodies are separated by porous tank walls, the dilute acid tank wall 25 is composed of a tank wall plate A33 and a tank wall plate B34, the raw material tank wall 12 is composed of a tank wall plate A33, a tank wall plate B34 and a tank wall plate C32, holes 35 which are identical in position, shape, size and number and can adjust the aperture are arranged on the three tank wall plates, the dilute acid tank 26 is provided with a dilute acid liquid inlet pipe 30 with a switch 29 and a liquid outlet pipe 21 with a switch 22, the lower part of the product tank 11 is also provided with a liquid outlet pipe 15 with a switch 14, a shaft 10 is arranged in the middle of the raw material tank 27, a raw material tank cover 1 is connected with the shaft 10 through a rotating wheel 3, the rotating wheel 3 is composed of a rotating wheel shaft sleeve 4, a wheel disc 5, a stand column 6, a rotating wheel beam 7 and a ball 2, wherein, the swiveling wheel rim plate 5 is connected with swiveling wheel crossbeam 7 through swiveling wheel stand 6, swiveling wheel ball 2 is being inlayed at the both ends of swiveling wheel crossbeam 7, the middle of raw material cover 1 is empty, swiveling wheel ball 2 is inlayed in raw material cover 1 the inside, can follow circular orbit and roll, supporting raw material cover 1 simultaneously, rotatory axle sleeve 4 cover is on axle 10, swiveling wheel 3 follows the screw through rotatory axle sleeve 4 and rotates around axle 10, it reciprocates to drive raw material cover 1 simultaneously, the lower part entering of raw material cover 27 is followed to the steam pipe 16 of taking switch 17, with steam heat transfer dish 13 and steam gas vent 24 intercommunication, steam heat transfer dish 13 is equipped with the comdenstion water discharge pipe 19 of taking switch 20, steam gas vent 24 is equipped with adjust knob 23.

While dilute acid tank 26, feed tank 27 and product tank 11 are arranged in a linear array as shown in fig. 2, in feed tank 27, of the three tank walls that make up the tank wall, tank wall a33 is fixed, tank wall B34 is movable longitudinally, tank wall C32 is movable laterally, and movement of tank wall B34 and tank wall C32 through a range of motion changes the size of the aperture 35 formed by the three tank walls, as shown in fig. 3 and 4.

As shown in fig. 5, 6 and 7, the steam heat exchange plate 13 is elongated and occupies a middle position between the non-porous tank walls 38 on both sides of the raw material tank 27, and the position of the steam vent 24 at one end of the steam heat exchange plate 13 can be adjusted by the adjusting knob 23 to change the opening and closing state of the steam vent 24 and the size of the vent.

[ example 2 ]

Treating corn straws by dilute acid two-stage hydrolysis, taking a certain amount of corn straws, cleaning and crushing the corn straws, putting the corn straws into a raw material tank 27, firstly carrying out primary hydrolysis, putting a certain amount of 1% sulfuric acid into a dilute acid liquid inlet pipe 30, adjusting the pore size of an eyelet 35 on the wall 25 of the dilute acid tank by moving a wall plate B34 of the dilute acid tank, letting 1% sulfuric acid enter the raw material tank 27, closing the eyelet 35 on the wall 25 of the dilute acid tank after the corn straws are submerged, opening a switch 23 of a steam pipe switch 17 and a steam exhaust port 24, letting 180 ℃ steam enter the raw material tank 27, staying for 8min, then closing the switch 23 of the steam pipe switch 17 and the steam exhaust port 24, adjusting the pore size of the eyelet 35 on the wall 12 of the raw material tank by moving a wall plate B34 of the raw material tank and a wall plate C32 of the raw material tank, letting hydrolysis products carry out solid-liquid separation through the wall 12 of the raw material tank, and simultaneously rotating a rotating, the completion of solid-liquid separation is promoted by the filter pressing action of the raw material tank cover 1, the liquid part enters the product tank 11 and is discharged from a liquid discharge pipe 15 of the product tank 11, then secondary hydrolysis is carried out, the eyelet 35 on the tank wall 12 of the raw material tank is closed, the raw material tank cover 1 is lifted, the steam pipe switch 17 is opened, steam with the temperature of 220 ℃ enters the steam heat exchange plate 13, the retention time is 10min, then closing the steam pipe switch 17, adjusting the aperture size of the perforations 35 of the raw material tank wall 12 by moving the raw material tank wall B34 and the raw material tank wall C32 again, allowing the hydrolysate to pass through the raw material tank wall 12 for solid-liquid separation, meanwhile, the rotating wheel 3 is rotated to put down the raw material tank cover 1, solid-liquid separation is promoted through the filter pressing effect of the raw material tank cover 1, the liquid part enters the product tank 11, and discharged from the drain pipe 15 of the product tank 11, and the solid portion is left in the raw material tank 27 and can be taken out by opening the raw material tank bottom plate 37.

The invention can change the steam temperature, the steam inlet amount, the dilute acid type and quantity and the retention time, carry out multiple times of hydrolysis and saccharification on the crushed corn straws or other cellulose raw materials, compare the hydrolysis and saccharification rates and explore the optimal technological conditions of the dilute acid hydrolysis and saccharification of the cellulose raw materials.